1 | /* Virginia Tech Cognitive Radio Open Source Systems |
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2 | * Virginia Tech, 2009 |
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3 | * |
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4 | * LICENSE INFORMATION GOES HERE |
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5 | */ |
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6 | |
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7 | /* DESCRIPTION OF FILE. |
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8 | */ |
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9 | |
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10 | |
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11 | #include <cstdlib> |
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12 | #include <cstring> |
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13 | #include <stdint.h> |
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14 | |
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15 | #include "vtcross/common.h" |
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16 | #include "vtcross/components.h" |
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17 | #include "vtcross/containers.h" |
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18 | #include "vtcross/debug.h" |
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19 | #include "vtcross/error.h" |
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20 | #include "vtcross/socketcomm.h" |
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21 | |
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22 | |
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23 | PolicyEngine::PolicyEngine() |
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24 | { |
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25 | LOG("Creating Policy Engine.\n"); |
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26 | SML_present = false; |
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27 | control = new RemoteComponent; |
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28 | LoadPolicies(); |
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29 | } |
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30 | |
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31 | |
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32 | PolicyEngine::~PolicyEngine() |
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33 | { |
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34 | delete control; |
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35 | } |
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36 | |
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37 | |
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38 | PolicyEngine::PolicyEngine(const char* serverName, const char* portNumber, \ |
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39 | const bool SML) |
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40 | { |
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41 | LOG("Creating Policy Engine.\n"); |
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42 | |
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43 | SML_present = SML; |
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44 | control = new RemoteComponent; |
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45 | control->serverName = std::string(serverName); |
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46 | control->serverPort = atoi(portNumber); |
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47 | |
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48 | control->socketFD = ClientSocket(serverName, portNumber); |
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49 | |
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50 | if(SML_present) { |
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51 | RegisterServices(control->socketFD); |
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52 | LOG("Policy Engine connected to SML at %s.\n", serverName); |
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53 | } |
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54 | else { |
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55 | RegisterComponent(control->socketFD); |
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56 | LOG("Policy Engine connected to shell at %s.\n", serverName); |
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57 | } |
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58 | |
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59 | LoadPolicies(); |
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60 | } |
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61 | |
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62 | |
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63 | void |
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64 | PolicyEngine::GetRemoteComponentType(int32_t socketFD) |
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65 | { |
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66 | } |
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67 | |
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68 | |
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69 | void |
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70 | PolicyEngine::WaitForSignal(int32_t socketFD) |
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71 | { |
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72 | LOG("Policy Engine:: Waiting for Policy Check Request.\n"); |
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73 | |
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74 | int32_t decision_array[10]; |
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75 | struct Parameter pList[10]; |
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76 | struct CE_Info ce_info; |
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77 | |
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78 | // TODO should this be a GetRequest call or something else? |
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79 | if(GetRequest(socketFD, pList, &ce_info)) { |
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80 | LOG("Policy Engine:: Validating Transmission Parameters.\n"); |
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81 | ValidateParameters(pList, &ce_info, decision_array); |
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82 | |
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83 | LOG("Policy Engine:: Sending Policy decision to Server.\n"); |
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84 | SendPEDecision(socketFD, pList, &ce_info, decision_array); |
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85 | } |
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86 | } |
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87 | |
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88 | |
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89 | void |
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90 | PolicyEngine::Shutdown() |
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91 | { |
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92 | if(SML_present) |
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93 | DeregisterServices(control->socketFD); |
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94 | else |
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95 | DeregisterComponent(control->socketFD); |
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96 | } |
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97 | |
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98 | |
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99 | void |
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100 | PolicyEngine::Reset() |
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101 | { |
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102 | LOG("Resetting Policy Engine.\n"); |
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103 | SML_present = false; |
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104 | control = new RemoteComponent; |
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105 | LoadPolicies(); |
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106 | } |
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107 | |
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108 | |
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109 | void |
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110 | PolicyEngine::RegisterComponent(int32_t socketFD) |
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111 | { |
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112 | SendMessage(socketFD, "register_engine_policy"); |
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113 | LOG("Policy Engine:: Registration message sent.\n"); |
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114 | |
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115 | } |
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116 | |
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117 | |
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118 | void |
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119 | PolicyEngine::DeregisterComponent(int32_t socketFD) |
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120 | { |
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121 | SendMessage(socketFD, "deregister_engine_policy"); |
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122 | LOG("Policy Engine:: Registration message sent.\n"); |
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123 | } |
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124 | |
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125 | |
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126 | void |
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127 | PolicyEngine::RegisterServices(int32_t socketFD) |
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128 | { |
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129 | LOG("Policy Engine:: Registering services.\n"); |
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130 | SendMessage(socketFD, "register_service_pe_geo"); |
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131 | SendMessage(socketFD, "register_service_pe_time"); |
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132 | SendMessage(socketFD, "register_service_pe_spectrum"); |
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133 | SendMessage(socketFD, "register_service_pe_spacial"); |
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134 | } |
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135 | |
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136 | |
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137 | void |
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138 | PolicyEngine::DeregisterServices(int32_t socketFD) |
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139 | { |
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140 | LOG("Policy Engine:: Deregistering services.\n"); |
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141 | SendMessage(socketFD, "deregister_service_pe_geo"); |
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142 | SendMessage(socketFD, "deregister_service_pe_time"); |
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143 | SendMessage(socketFD, "deregister_service_pe_spectrum"); |
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144 | SendMessage(socketFD, "deregister_service_pe_spacial"); |
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145 | } |
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146 | |
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147 | |
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148 | void |
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149 | PolicyEngine::LoadPolicies() |
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150 | { |
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151 | LOG("PolicyEngine:: Loading policies.\n"); |
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152 | } |
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153 | |
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154 | |
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155 | void |
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156 | PolicyEngine::ReloadPolicies() |
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157 | { |
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158 | LOG("PolicyEngine:: Reloading policies.\n"); |
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159 | } |
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160 | |
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161 | |
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162 | void |
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163 | PolicyEngine::SendPEDecision(int32_t socketFD, struct Parameter pList[], \ |
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164 | struct CE_Info *ce_info, int32_t decision_array[]) |
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165 | { |
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166 | char var[50]; |
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167 | |
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168 | for (size_t i = 0; i < ce_info->numParameters; i++) { |
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169 | sprintf(var, "%i", decision_array[i]); |
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170 | SendMessage(socketFD, var); |
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171 | } |
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172 | } |
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173 | |
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174 | |
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175 | void |
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176 | PolicyEngine::ValidateParameters(struct Parameter pList[], \ |
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177 | struct CE_Info *ce_info, int decision_array[]) |
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178 | { |
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179 | LOG("Policy Engine:: Policies Validated.\n"); |
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180 | for (size_t i = 0; i < ce_info->numParameters; i++) |
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181 | decision_array[i] = 1; |
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182 | } |
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183 | |
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